Emma Thompson co-stars as author PL Travers in a film about the making of 'Mary Poppins'

The first trailer for Disney’s Saving Mr Banks has been released. Scroll down and click ‘play’ to watch it.

The film stars Tom Hanks as Walt Disney and Emma Thompson as PL Travers, the author of the Mary Poppins books. Based on real-life events, it follows Travers as she travels from London to Hollywood to work with Disney on the 1964 film starring her beloved nanny.

It took Disney over 20 years to convince Travers that a film would do her books justice, and when she finally agreed she demanded script approval – which she got. Travers and Disney locked horns over many aspects of the big screen adaptation, including whether to use original songs composed especially for the film.

The film features flashbacks to Travers’ childhood in Australia and Colin Farrell co-stars as the author’s father, who was the inspiration for Mr Banks, the patriarch in her Mary Poppins books. The cast also includes Jason Schwartzman and BJ Novak as the Sherman Brothers, the songwriting duo behind ‘A Spoonful Of Sugar’ and ‘Supercalifragilisticexpialidocious’.

John Lee Hancock (The Blind Side) directed from a script by British screenwriter Kelly Marcel, who has since been hired to adapt Fifty Shades Of Grey for the big screen. Saving Mr Banks opens in cinemas on December 20.